executor.h (1885B)
1 /* 2 * Copyright (C) 2023 Nuo Mi 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #ifndef AVUTIL_EXECUTOR_H 22 #define AVUTIL_EXECUTOR_H 23 24 typedef struct AVExecutor AVExecutor; 25 typedef struct AVTask AVTask; 26 27 struct AVTask { 28 AVTask *next; 29 }; 30 31 typedef struct AVTaskCallbacks { 32 void *user_data; 33 34 int local_context_size; 35 36 // return 1 if a's priority > b's priority 37 int (*priority_higher)(const AVTask *a, const AVTask *b); 38 39 // task is ready for run 40 int (*ready)(const AVTask *t, void *user_data); 41 42 // run the task 43 int (*run)(AVTask *t, void *local_context, void *user_data); 44 } AVTaskCallbacks; 45 46 /** 47 * Alloc executor 48 * @param callbacks callback structure for executor 49 * @param thread_count worker thread number 50 * @return return the executor 51 */ 52 AVExecutor* av_executor_alloc(const AVTaskCallbacks *callbacks, int thread_count); 53 54 /** 55 * Free executor 56 * @param e pointer to executor 57 */ 58 void av_executor_free(AVExecutor **e); 59 60 /** 61 * Add task to executor 62 * @param e pointer to executor 63 * @param t pointer to task. If NULL, it will wakeup one work thread 64 */ 65 void av_executor_execute(AVExecutor *e, AVTask *t); 66 67 #endif //AVUTIL_EXECUTOR_H